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Descr iption: Recent studies on Mathematical modeling of visual cortical cells [Kulikowski/Marcelja/Bishop:1982] suggest a tuned band pass filter bank structure. These filters are found to have Gaussian transfer functions in the frequency domain. Thu
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频率域熵图,两个窗口,熵的径向和角向分布,便于分析纹理,还有一个自己写的gabor变换,请参考。-Frequency domain entropy map, two windows, the entropy of the radial and angular distribution, to facilitate analysis of texture, there is a transform gabor wrote it myself, please refer to.
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基于Gabor变换的图像纹理识别。
提出了一种改进的Gabor变换的图像纹理增强算法,将空域的纹理图像变换到联合空间频率域并将联合空间
频率域的能量分布作为掌纹的特征,Gobar滤波器在频域内对子块其主方向上频率能量分布进行滤波,特征向量进行了匹配
识别,增强特征纹线信息并对核心区域进行多方向空间频率能量滤波合成,同时也对滤波算法进行了优化,有效地减少了运
算量。-Gabor transform based image texture recognition. An improv
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Gabor变换属于加窗傅立叶变换,Gabor函数可以在频域不同尺度、不同方向上提取相关的特征。另外Gabor函数与人眼的生物作用相仿,所以经常用作纹理识别上,并取得了较好的效果。-Gabor transform belongs to the windowed Fourier transform, Gabor function can be in the frequency domain on different scales and different directions extract re
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基于opencv1.0实现的二维Gabor滤波器, Gabor变换属于加窗傅立叶变换,Gabor函数可以在频域不同尺度、不同方向上提取相关的特征。另外Gabor函数与人眼的生物作用相仿,所以经常用作纹理识别上,并取得了较好的效果。-Based on two-dimensional Gabor filter realization opencv1.0, Gabor transform is windowed Fourier transform, Gabor functions in the fr
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Gabor变换可以达到时频局部化的目的:它能够在整体上提供信号的全部信息而又能提供在任一局部时间内信号变化剧烈程度的信息。简言之,可以同时提供时域和频域局部化的信息。-Frequency localized Gabor transform can achieve the purpose: it can provide all the information of the signal on the whole and they can provide the intensity of the s
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Gabor变换在频域不同尺度、不同方向上提取相关的特征-Gabor transform in the frequency domain different scales and directions extract relevant features
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Gabor滤波器的原理是 其脉冲响应为一个谐波函数(即下式中的余弦函数)和一个高斯函数的乘积。根据信号与系统理论,时频域的卷积和乘积互为傅里叶变换。Gabor滤波器的傅里叶变换为谐波和高斯函数各自傅里叶变换的卷积-The principle of the Gabor filter is a harmonic of its impulse response function (i.e., the cosine function in the formula) and the product of
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二维Gabor小波变换是在时频域进行信号分析处理的重要工具,其变换系数有着良好的视觉特性和生物学背景,因此被广泛应用于图像处理、模式识别等领域-An important tool for two-dimensional Gabor wavelet transform is a time-frequency domain signal analysis and processing, the conversion coefficient has a good visual properties a
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傅里叶变换是一种信号处理中的有力工具,可以帮助我们将图像从空域转换到频域,并提取到空域上不易提取的特征。但是经过傅里叶变换后,图像在不同位置的频度特征往往混合在一起,但是Gabor滤波器却可以抽取空间局部频度特征,是一种有效的纹理检测工具(Fu Liye transform is a powerful tool in signal processing, which helps us transform images from airspace to frequency domain and e
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